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How important is it to preserve languages?
Spearman's G
A theory proposing a general intelligence factor that underlies all cognitive abilities.
Mental Speed
The rate at which an individual can process information, often linked to cognitive efficiency and intelligence.
Fraternal Twins
Twins that develop from two different eggs fertilized by two different sperm, resulting in siblings that are genetically similar but not identical.
Identical Twins
Twins that result from a single fertilized egg splitting and developing into two genetically identical individuals.
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